Catalyst regeneration
US4284833A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1977 |
| Grant date | Aug 18, 1981 |
| Priority date | — |
| Expiry date | Dec 19, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S502/517
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The active life of an oxychlorination copper-containing catalyst is extended by the removal of sulfur-containing compounds from the gases fed to the catalyst reaction zone. A copper-containing oxychlorination catalyst which has been deactivated by the deposition of sulfur compounds thereon is reactivated in situ by operating the catalyst bed in an oxygen-free atmosphere for a sufficient period of time. The reactivation of the catalyst is completed when the conversions of hydrocarbon and chlorinating agent to chlorinated products indicate a high level of catalyst activity, as determined by an analysis of the gaseous effluent leaving the catalyst bed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.